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In a photoelectric experiment, kinetic e...

In a photoelectric experiment, kinetic energy of photoelectrons was plotted against the frequency of incident radition `(v)`, as show in figure. Which of the following statements is correct ?

A

The threshold frequency is `v_(1)`

B

The slope of this line is equal to Plank's constant

C

As the frequency of incident wavelength increases beyond threshold frequency, kinetic energy of photoelectrons decreases.

D

It is impossible to obtain such a graph

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